/* ============================================================
   Sistema de soporte QuantumBlox — componentes (inspirado en Uiverse)
   Tema morado premium, glassmorphism, neon. Prefijo qbs-.
   ============================================================ */
:root {
    --qbs-1: #6D28D9;
    --qbs-2: #8B5CF6;
    --qbs-3: #A855F7;
    --qbs-4: #C084FC;
    --qbs-bg: #070014;
    --qbs-glass: rgba(20, 12, 40, 0.72);
    --qbs-glass-2: rgba(139, 92, 246, 0.08);
    --qbs-border: rgba(168, 85, 247, 0.28);
    --qbs-text: #f3eaff;
    --qbs-text-dim: rgba(220, 208, 245, 0.62);
    --qbs-glow: rgba(139, 92, 246, 0.55);
    --qbs-radius: 16px;
}

/* ===== Botón principal "Abrir soporte" ===== */
.qbs-btn {
    --b: 0;
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 26px;
    border: 0;
    border-radius: var(--qbs-radius);
    font-family: inherit;
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.01em;
    color: #fff;
    cursor: pointer;
    background: linear-gradient(135deg, var(--qbs-1), var(--qbs-3) 55%, var(--qbs-4));
    background-size: 180% 180%;
    box-shadow: 0 10px 30px -8px var(--qbs-glow), inset 0 1px 0 rgba(255, 255, 255, 0.25);
    transition: transform 0.25s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.3s ease, background-position 0.6s ease;
}
.qbs-btn:hover {
    transform: scale(1.05);
    background-position: 100% 0;
    box-shadow: 0 16px 40px -8px var(--qbs-glow), 0 0 0 1px rgba(192, 132, 252, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}
.qbs-btn:active { transform: scale(0.98); }
.qbs-btn svg { width: 19px; height: 19px; }
.qbs-btn-ghost {
    background: rgba(139, 92, 246, 0.12);
    border: 1px solid var(--qbs-border);
    box-shadow: none;
    color: var(--qbs-text);
}
.qbs-btn-ghost:hover { background: rgba(139, 92, 246, 0.2); box-shadow: 0 0 0 1px var(--qbs-border); }

/* ===== FAB flotante (esquina inferior derecha) ===== */
.qbs-fab {
    position: fixed;
    right: 22px;
    bottom: 104px;
    z-index: 1200;
    width: 60px;
    height: 60px;
    display: grid;
    place-items: center;
    border: 0;
    border-radius: 50%;
    cursor: pointer;
    color: #fff;
    background: linear-gradient(135deg, var(--qbs-1), var(--qbs-3));
    box-shadow: 0 12px 34px -6px var(--qbs-glow), inset 0 1px 0 rgba(255, 255, 255, 0.3);
    transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.3s ease;
    animation: qbs-fab-pulse 3.2s ease-in-out infinite;
}
.qbs-fab:hover { transform: scale(1.08) translateY(-2px); box-shadow: 0 18px 44px -6px var(--qbs-glow); }
.qbs-fab svg { width: 26px; height: 26px; }
@keyframes qbs-fab-pulse {
    0%, 100% { box-shadow: 0 12px 34px -6px var(--qbs-glow), 0 0 0 0 rgba(168, 85, 247, 0.45); }
    50% { box-shadow: 0 12px 34px -6px var(--qbs-glow), 0 0 0 12px rgba(168, 85, 247, 0); }
}

/* ===== Widget tipo chat ===== */
.qbs-widget {
    position: fixed;
    right: 22px;
    bottom: 104px;
    z-index: 1201;
    width: min(360px, calc(100vw - 32px));
    border-radius: 22px;
    overflow: hidden;
    background: var(--qbs-glass);
    border: 1px solid var(--qbs-border);
    backdrop-filter: blur(22px) saturate(150%);
    -webkit-backdrop-filter: blur(22px) saturate(150%);
    box-shadow: 0 30px 70px -20px rgba(0, 0, 0, 0.7), 0 0 0 1px rgba(192, 132, 252, 0.12);
    transform: translateY(16px) scale(0.96);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.3s ease;
}
.qbs-widget.is-open { transform: translateY(0) scale(1); opacity: 1; pointer-events: auto; }
.qbs-widget-head {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 18px;
    background: linear-gradient(135deg, rgba(109, 40, 217, 0.45), rgba(168, 85, 247, 0.25));
    border-bottom: 1px solid var(--qbs-border);
}
.qbs-widget-avatar {
    width: 38px; height: 38px;
    border-radius: 50%;
    display: grid; place-items: center;
    background: linear-gradient(135deg, var(--qbs-2), var(--qbs-4));
    color: #fff;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.4);
}
.qbs-widget-avatar svg { width: 20px; height: 20px; }
.qbs-widget-title { font-weight: 800; color: #fff; font-size: 14.5px; line-height: 1.1; }
.qbs-widget-sub { font-size: 11.5px; color: var(--qbs-text-dim); display: flex; align-items: center; gap: 6px; margin-top: 2px; }
.qbs-dot-online { width: 7px; height: 7px; border-radius: 50%; background: #34d399; box-shadow: 0 0 8px #34d399; }
.qbs-widget-close {
    margin-left: auto;
    width: 32px; height: 32px;
    border: 0; border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
    color: #fff; cursor: pointer;
    display: grid; place-items: center;
    transition: background 0.2s ease, transform 0.2s ease;
}
.qbs-widget-close:hover { background: rgba(255, 255, 255, 0.14); transform: rotate(90deg); }
.qbs-widget-body { padding: 18px; }
.qbs-bubble {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 14px 14px 14px 4px;
    padding: 12px 14px;
    font-size: 13.5px;
    color: var(--qbs-text);
    line-height: 1.5;
    animation: qbs-fade-up 0.4s ease both;
}
.qbs-widget-actions { display: flex; flex-direction: column; gap: 10px; margin-top: 16px; }
.qbs-chip-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.qbs-chip {
    border: 1px solid var(--qbs-border);
    background: var(--qbs-glass-2);
    color: var(--qbs-text);
    border-radius: 999px;
    padding: 7px 13px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}
.qbs-chip:hover { background: rgba(139, 92, 246, 0.22); transform: translateY(-1px); box-shadow: 0 0 14px -4px var(--qbs-glow); }
.qbs-widget-foot { padding: 12px 18px 16px; border-top: 1px solid rgba(255, 255, 255, 0.06); }
.qbs-link { color: var(--qbs-4); cursor: pointer; font-size: 12.5px; font-weight: 600; background: none; border: 0; }
.qbs-link:hover { text-decoration: underline; }

/* ===== Chat en vivo del widget ===== */
.qbs-widget-new {
    width: 30px; height: 30px; margin-left: auto;
    border: 0; border-radius: 50%;
    background: rgba(255,255,255,.06); color: #fff; cursor: pointer;
    display: grid; place-items: center;
    transition: background .2s ease;
}
.qbs-widget-new + .qbx { margin-left: 6px; }
.qbs-widget-new:hover { background: rgba(255,255,255,.14); }
.qbs-widget-new svg { width: 16px; height: 16px; }
.qbs-chat {
    display: flex;
    flex-direction: column;
    gap: 10px;
    height: 360px;
    max-height: 54vh;
    overflow-y: auto;
    padding: 16px;
}
.qbs-chat::-webkit-scrollbar { width: 8px; }
.qbs-chat::-webkit-scrollbar-thumb { background: rgba(168,85,247,.4); border-radius: 8px; }
.qbs-chat .qbs-msg { max-width: 86%; }
.qbs-chat-time { font-size: 10px; opacity: .65; margin-bottom: 3px; }
.qbs-chat-sys {
    align-self: center; text-align: center;
    font-size: 11.5px; color: var(--qbs-text-dim);
    background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.07);
    border-radius: 10px; padding: 7px 12px; max-width: 92%;
}
.qbs-chat-contact { display: flex; flex-direction: column; gap: 8px; background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.08); border-radius: 14px; padding: 12px; }
.qbs-typing { align-self: flex-start; display: flex; gap: 4px; padding: 12px 14px; background: rgba(255,255,255,.06); border-radius: 16px; border-bottom-left-radius: 4px; }
.qbs-typing span { width: 7px; height: 7px; border-radius: 50%; background: var(--qbs-4); opacity: .5; animation: qbs-typing 1s infinite; }
.qbs-typing span:nth-child(2) { animation-delay: .15s; }
.qbs-typing span:nth-child(3) { animation-delay: .3s; }
@keyframes qbs-typing { 0%,100% { opacity: .3; transform: translateY(0); } 50% { opacity: 1; transform: translateY(-3px); } }
.qbs-chat-input { display: flex; gap: 8px; align-items: flex-end; padding: 12px; border-top: 1px solid rgba(255,255,255,.07); }
.qbs-chat-input textarea {
    flex: 1; resize: none; min-height: 42px; max-height: 110px;
    background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.14);
    border-radius: 12px; padding: 11px 13px; color: #fff; font-family: inherit;
    font-size: 13.5px; line-height: 1.4;
}
.qbs-chat-input textarea:focus { outline: 0; border-color: var(--qbs-3); box-shadow: 0 0 0 3px rgba(168,85,247,.16); }
.qbs-chat-send { flex: 0 0 auto; width: 42px; height: 42px; border: 0; border-radius: 12px; background: linear-gradient(135deg, var(--qbs-1), var(--qbs-3)); color: #fff; cursor: pointer; display: grid; place-items: center; transition: transform .2s ease; }
.qbs-chat-send:hover { transform: scale(1.05); }
.qbs-chat-send:disabled { opacity: .5; cursor: default; transform: none; }
.qbs-chat-send svg { width: 18px; height: 18px; }

/* ===== Modal ===== */
.qbs-overlay {
    position: fixed;
    inset: 0;
    z-index: 13000;
    display: grid;
    place-items: center;
    padding: 20px;
    background: rgba(5, 2, 14, 0.72);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}
.qbs-overlay.is-open { opacity: 1; pointer-events: auto; }
.qbs-modal {
    width: min(620px, 100%);
    max-height: 90vh;
    overflow-y: auto;
    border-radius: 24px;
    background:
        radial-gradient(circle at 50% 0%, rgba(168, 85, 247, 0.16), transparent 55%),
        var(--qbs-glass);
    border: 1px solid var(--qbs-border);
    backdrop-filter: blur(26px) saturate(150%);
    -webkit-backdrop-filter: blur(26px) saturate(150%);
    box-shadow: 0 40px 100px -30px rgba(0, 0, 0, 0.8), 0 0 0 1px rgba(192, 132, 252, 0.1);
    transform: translateY(20px) scale(0.96);
    transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}
.qbs-overlay.is-open .qbs-modal { transform: translateY(0) scale(1); }
.qbs-modal-head { position: relative; padding: 26px 26px 6px; text-align: center; }
.qbs-eyebrow {
    display: inline-block;
    font-size: 11px; font-weight: 800; letter-spacing: 0.16em; text-transform: uppercase;
    color: #e9d5ff;
    background: rgba(168, 85, 247, 0.14);
    border: 1px solid var(--qbs-border);
    border-radius: 999px;
    padding: 5px 12px;
    margin-bottom: 12px;
}
.qbs-modal-title { font-size: 24px; font-weight: 800; color: #fff; letter-spacing: -0.02em; margin: 0 0 6px; }
.qbs-modal-desc { font-size: 13.5px; color: var(--qbs-text-dim); margin: 0; }
.qbs-modal-close {
    position: absolute; top: 16px; right: 16px;
    width: 36px; height: 36px;
    border: 0; border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
    color: #fff; cursor: pointer; font-size: 20px;
    display: grid; place-items: center;
    transition: background 0.2s ease, transform 0.2s ease;
}
.qbs-modal-close:hover { background: rgba(255, 255, 255, 0.14); transform: rotate(90deg); }
.qbs-modal-body { padding: 18px 26px 28px; }

/* ===== Tarjetas de categoría ===== */
.qbs-cats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.qbs-cat {
    position: relative;
    text-align: left;
    padding: 16px;
    border-radius: var(--qbs-radius);
    border: 1px solid rgba(255, 255, 255, 0.09);
    background: var(--qbs-glass-2);
    cursor: pointer;
    overflow: hidden;
    transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
    animation: qbs-fade-up 0.45s ease both;
}
.qbs-cat:hover {
    transform: translateY(-3px);
    border-color: var(--qbs-border);
    background: rgba(139, 92, 246, 0.16);
    box-shadow: 0 16px 36px -16px var(--qbs-glow);
}
.qbs-cat-ico {
    width: 40px; height: 40px;
    border-radius: 11px;
    display: grid; place-items: center;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.35), rgba(192, 132, 252, 0.18));
    color: #e9d5ff;
    margin-bottom: 12px;
}
.qbs-cat-ico svg { width: 21px; height: 21px; }
.qbs-cat-title { font-size: 14px; font-weight: 700; color: #fff; }
.qbs-cat-sub { font-size: 11.5px; color: var(--qbs-text-dim); margin-top: 3px; }

/* ===== Formulario ===== */
.qbs-form { display: grid; gap: 16px; }
.qbs-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.qbs-field { position: relative; display: block; }
.qbs-label { display: block; font-size: 12px; font-weight: 600; color: var(--qbs-text-dim); margin-bottom: 7px; }
.qbs-label .req { color: var(--qbs-4); }
.qbs-input, .qbs-textarea, .qbs-select {
    width: 100%;
    background: rgba(255, 255, 255, 0.04);
    border: 1.5px solid rgba(255, 255, 255, 0.14);
    border-radius: 13px;
    padding: 13px 15px;
    color: #fff;
    font-family: inherit;
    font-size: 14.5px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.qbs-textarea { min-height: 120px; resize: vertical; line-height: 1.5; }
.qbs-input::placeholder, .qbs-textarea::placeholder { color: rgba(220, 208, 245, 0.4); }
.qbs-input:focus, .qbs-textarea:focus, .qbs-select:focus {
    outline: 0;
    border-color: var(--qbs-3);
    background: rgba(255, 255, 255, 0.06);
    box-shadow: 0 0 0 4px rgba(168, 85, 247, 0.16);
}
.qbs-select { appearance: none; -webkit-appearance: none; cursor: pointer; background-image: linear-gradient(45deg, transparent 50%, var(--qbs-4) 50%), linear-gradient(135deg, var(--qbs-4) 50%, transparent 50%); background-position: calc(100% - 18px) center, calc(100% - 13px) center; background-size: 5px 5px, 5px 5px; background-repeat: no-repeat; }
.qbs-select option { background: #150a26; color: #fff; }
.qbs-field.has-error .qbs-input, .qbs-field.has-error .qbs-textarea, .qbs-field.has-error .qbs-select { border-color: #fb7185; box-shadow: 0 0 0 4px rgba(251, 113, 133, 0.14); }
.qbs-err { color: #fda4af; font-size: 11.5px; margin-top: 6px; display: none; }
.qbs-field.has-error .qbs-err { display: block; }

/* File / dropzone */
.qbs-file {
    display: flex; align-items: center; gap: 12px;
    border: 1.5px dashed rgba(168, 85, 247, 0.4);
    border-radius: 13px;
    padding: 14px 15px;
    cursor: pointer;
    color: var(--qbs-text-dim);
    font-size: 13px;
    transition: border-color 0.2s ease, background 0.2s ease;
}
.qbs-file:hover { border-color: var(--qbs-3); background: rgba(139, 92, 246, 0.08); }
.qbs-file input { display: none; }
.qbs-file svg { width: 20px; height: 20px; color: var(--qbs-4); flex: 0 0 auto; }
.qbs-file-name { color: var(--qbs-4); font-weight: 600; }

.qbs-form-foot { display: flex; align-items: center; gap: 12px; margin-top: 4px; }
.qbs-form-foot .qbs-btn { flex: 1; }

/* ===== Loader morado ===== */
.qbs-loader-wrap { display: flex; flex-direction: column; align-items: center; gap: 18px; padding: 36px 0; }
.qbs-loader {
    width: 54px; height: 54px;
    border-radius: 50%;
    background: conic-gradient(from 0deg, transparent 0%, var(--qbs-3) 75%, var(--qbs-4) 100%);
    -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 6px), #000 0);
    mask: radial-gradient(farthest-side, transparent calc(100% - 6px), #000 0);
    animation: qbs-spin 0.9s linear infinite;
    filter: drop-shadow(0 0 8px var(--qbs-glow));
}
.qbs-loader-text { color: var(--qbs-text-dim); font-size: 13.5px; }
@keyframes qbs-spin { to { transform: rotate(360deg); } }

/* ===== Éxito ===== */
.qbs-success { text-align: center; padding: 14px 0 6px; animation: qbs-fade-up 0.45s ease both; }
.qbs-success-ring {
    width: 76px; height: 76px; margin: 0 auto 18px;
    border-radius: 50%;
    display: grid; place-items: center;
    background: radial-gradient(circle, rgba(52, 211, 153, 0.22), transparent 70%);
    border: 2px solid rgba(52, 211, 153, 0.5);
    color: #6ee7b7;
    box-shadow: 0 0 30px -6px rgba(52, 211, 153, 0.5);
}
.qbs-success-ring svg { width: 36px; height: 36px; }
.qbs-code-box {
    display: inline-flex; align-items: center; gap: 12px;
    margin: 16px 0;
    padding: 12px 18px;
    border-radius: 13px;
    background: rgba(168, 85, 247, 0.12);
    border: 1px solid var(--qbs-border);
}
.qbs-code-val { font-family: 'Space Grotesk', monospace; font-size: 20px; font-weight: 800; letter-spacing: 0.08em; color: #fff; }
.qbs-copy { border: 0; background: rgba(255, 255, 255, 0.08); color: #fff; border-radius: 8px; padding: 7px 9px; cursor: pointer; transition: background 0.2s ease; }
.qbs-copy:hover { background: rgba(255, 255, 255, 0.16); }
.qbs-copy svg { width: 15px; height: 15px; display: block; }

/* ===== Badges de estado ===== */
.qbs-status {
    display: inline-flex; align-items: center; gap: 7px;
    font-size: 11.5px; font-weight: 700; letter-spacing: 0.02em;
    padding: 5px 11px; border-radius: 999px;
    border: 1px solid currentColor;
}
.qbs-status::before { content: ''; width: 7px; height: 7px; border-radius: 50%; background: currentColor; box-shadow: 0 0 8px currentColor; }
.qbs-status.open { color: #c084fc; }
.qbs-status.in_review { color: #fbbf24; }
.qbs-status.answered { color: #60a5fa; }
.qbs-status.closed { color: #94a3b8; }

/* ===== Conversación (ticket) ===== */
.qbs-thread { display: flex; flex-direction: column; gap: 12px; }
.qbs-msg { max-width: 88%; padding: 12px 15px; border-radius: 16px; font-size: 13.5px; line-height: 1.55; animation: qbs-fade-up 0.35s ease both; }
.qbs-msg-client { align-self: flex-end; background: linear-gradient(135deg, rgba(139, 92, 246, 0.5), rgba(168, 85, 247, 0.35)); color: #fff; border-bottom-right-radius: 4px; }
.qbs-msg-staff { align-self: flex-start; background: rgba(255, 255, 255, 0.06); border: 1px solid rgba(255, 255, 255, 0.1); color: var(--qbs-text); border-bottom-left-radius: 4px; }
.qbs-msg-meta { font-size: 10.5px; opacity: 0.7; margin-bottom: 4px; }

/* ===== Dropdown custom (reemplaza al select nativo) ===== */
.qbs-dd { position: relative; }
.qbs-dd-toggle {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    background: rgba(255, 255, 255, 0.04);
    border: 1.5px solid rgba(255, 255, 255, 0.14);
    border-radius: 13px;
    padding: 13px 15px;
    color: #fff;
    font-family: inherit;
    font-size: 14.5px;
    text-align: left;
    cursor: pointer;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.qbs-dd-toggle:hover { background: rgba(255, 255, 255, 0.06); }
.qbs-dd.open .qbs-dd-toggle, .qbs-dd-toggle:focus {
    outline: 0;
    border-color: var(--qbs-3);
    background: rgba(255, 255, 255, 0.06);
    box-shadow: 0 0 0 4px rgba(168, 85, 247, 0.16);
}
.qbs-dd-val { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.qbs-dd-val.placeholder { color: rgba(220, 208, 245, 0.4); }
.qbs-dd-caret {
    width: 9px; height: 9px;
    border-right: 2px solid var(--qbs-4);
    border-bottom: 2px solid var(--qbs-4);
    transform: rotate(45deg);
    margin-top: -3px;
    flex: 0 0 auto;
    transition: transform 0.25s ease, margin-top 0.25s ease;
}
.qbs-dd.open .qbs-dd-caret { transform: rotate(225deg); margin-top: 2px; }
.qbs-dd-menu {
    position: absolute;
    left: 0; right: 0;
    top: calc(100% + 6px);
    z-index: 30;
    padding: 6px;
    max-height: 220px;
    overflow-y: auto;
    background: var(--qbs-glass);
    border: 1px solid var(--qbs-border);
    border-radius: 14px;
    backdrop-filter: blur(20px) saturate(150%);
    -webkit-backdrop-filter: blur(20px) saturate(150%);
    box-shadow: 0 24px 50px -16px rgba(0, 0, 0, 0.7);
    opacity: 0;
    transform: translateY(-6px);
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
}
.qbs-dd.open .qbs-dd-menu { opacity: 1; transform: translateY(0); pointer-events: auto; }
.qbs-dd-opt {
    padding: 11px 13px;
    border-radius: 10px;
    font-size: 14px;
    color: var(--qbs-text);
    cursor: pointer;
    transition: background 0.15s ease;
}
.qbs-dd-opt:hover { background: rgba(139, 92, 246, 0.22); }
.qbs-dd-opt.sel { color: #fff; background: rgba(168, 85, 247, 0.2); }
.qbs-dd-menu::-webkit-scrollbar { width: 8px; }
.qbs-dd-menu::-webkit-scrollbar-thumb { background: rgba(168, 85, 247, 0.4); border-radius: 8px; }
/* El <select> nativo se oculta pero sigue en el DOM (se sincroniza por JS). */
.qbdd-native-hidden { display: none !important; }

/* ===== Boton cerrar reutilizable (Uiverse by javierBarroso, adaptado) ===== */
.qbx {
    position: relative;
    width: 40px;
    height: 40px;
    padding: 0;
    border: none;
    background: rgba(180, 83, 107, 0.11);
    border-radius: 8px;
    cursor: pointer;
    font-size: 0;
    flex: 0 0 auto;
    transition: background 0.45s ease;
}
.qbx .qbx-x, .qbx .qbx-y {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 18px;
    height: 1.5px;
    background-color: #fff;
}
.qbx .qbx-x { transform: translate(-50%, -50%) rotate(45deg); }
.qbx .qbx-y { transform: translate(-50%, -50%) rotate(-45deg); }
.qbx .qbx-tip {
    position: absolute;
    bottom: calc(100% + 7px);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4px 10px;
    width: max-content;
    font-size: 11px;
    font-weight: 600;
    background-color: rgb(19, 22, 24);
    color: rgb(187, 229, 236);
    border-radius: 4px;
    pointer-events: none;
    opacity: 0;
    white-space: nowrap;
    z-index: 2;
}
.qbx:hover { background-color: rgb(211, 21, 21); }
.qbx:active { background-color: rgb(130, 0, 0); }
.qbx:hover .qbx-tip { animation: qbx-tip 0.2s forwards 0.25s; }
@keyframes qbx-tip { to { opacity: 1; } }
/* Modificadores de posicion */
.qbx.qbx--corner { position: absolute; top: 14px; right: 14px; z-index: 5; }
.qbx.qbx--end { margin-left: auto; }
.qbx.qbx--sm { width: 32px; height: 32px; }
.qbx.qbx--sm .qbx-x, .qbx.qbx--sm .qbx-y { width: 14px; }
/* Tooltip debajo (para botones pegados al borde superior, ej. banner promo). */
.qbx.qbx--tip-below .qbx-tip { bottom: auto; top: calc(100% + 7px); }

/* ===== Toast ===== */
.qbs-toast {
    position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%) translateY(20px);
    z-index: 14000;
    background: var(--qbs-glass); border: 1px solid var(--qbs-border);
    backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
    color: #fff; padding: 13px 20px; border-radius: 13px; font-size: 13.5px; font-weight: 600;
    box-shadow: 0 18px 44px -12px rgba(0, 0, 0, 0.7);
    opacity: 0; pointer-events: none; transition: opacity 0.3s ease, transform 0.3s ease;
}
.qbs-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.qbs-toast.err { border-color: rgba(251, 113, 133, 0.5); }

@keyframes qbs-fade-up { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }

/* ===== Responsive ===== */
@media (max-width: 600px) {
    .qbs-cats { grid-template-columns: 1fr; }
    .qbs-row { grid-template-columns: 1fr; }
    .qbs-fab { right: 16px; bottom: 92px; width: 54px; height: 54px; }
    .qbs-widget { right: 16px; bottom: 92px; }
}
@media (prefers-reduced-motion: reduce) {
    .qbs-fab { animation: none; }
    .qbs-btn, .qbs-cat, .qbs-widget, .qbs-modal { transition: none; }
}